Secondary positioning mechanism for mold tray

Abstract

A die tray secondary positioning mechanism comprises a conveying line, a die tray, an elastic installation structure, a driving assembly and a positioning piece, the die tray is used for placing and positioning products, the elastic installation structure comprises a sliding block and a guide rod, the guide rod is fixed to the die tray, the sliding block is arranged on the guide rod in a sliding and penetrating mode, and the sliding block is connected with the conveying line at the same time. The mold tray is mounted on the conveying line through an elastic mounting structure; the conveying line conveys the mold tray to the positioning operation station for initial positioning, positioning grooves are formed in the two sides, close to the conveying line, of the mold tray, the positioning pieces are opposite to the positioning grooves in position, and the driving assembly drives the mold tray to move in the process of driving the positioning pieces to enter the positioning grooves, so that the positioning pieces completely enter the positioning grooves; the mold tray is positioned at a set position; the driving assembly comprises a positioning cylinder, a connecting rod and a rotating shaft. The secondary positioning device can realize secondary precise positioning of the mold tray, and is quick in response, high in working efficiency, simple in structure, accurate in control and wide in applicability.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a secondary positioning mechanism for a mold pallet. Background Technology

[0002] Automated product operations require precise product positioning at each workstation. Continuous conveyor lines typically use synchronous belts or chains to transport products. However, synchronous belts or chains have significant positioning deviations, especially for longer conveyor lines, where accumulated errors are difficult to eliminate. As the operating time increases, the positional deviation of synchronous belts or chains will grow larger due to deformation and other reasons, making precise positioning difficult. To ensure the fixed positioning and arrangement of products, they are generally placed on mold pallets for positioning, fixing, and arrangement, facilitating operations such as product gripping, labeling, and inspection. To ensure accurate product positioning at the operating station, the mold pallets also need to be accurately positioned. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mold pallet secondary positioning mechanism that is fast-responding, accurate in positioning, simple in structure, and widely applicable.

[0004] This utility model is achieved through the following technical solution:

[0005] A secondary positioning mechanism for a mold pallet includes a conveyor line, a mold pallet, a flexible mounting structure, a drive assembly, and a positioning element. The mold pallet is used to place and position products, which are positioned and arranged within it for gripping by a robotic arm. The flexible mounting structure includes a slider and a guide rod. The guide rod is fixed to the mold pallet, and its extension direction is parallel to the conveying direction of the conveyor line. The slider slides along the guide rod and is simultaneously connected to the conveyor line. The mold pallet is mounted on the conveyor line via the flexible mounting structure, and due to the sliding between the slider and the guide rod, the mold pallet can move relative to the conveyor line within a certain range. The conveyor line transports the mold pallet to a positioning operation station for initial positioning. Positioning grooves are provided on both sides of the mold pallet near the conveyor line. The positioning element is positioned beside the positioning operation station and opposite to the positioning grooves. The drive assembly is connected to the positioning element to drive it into the positioning groove of the mold pallet. The mold pallet moves under the action of the positioning element, causing the positioning element to fully enter the positioning groove, thereby achieving secondary positioning of the mold pallet at the positioning operation station. The primary positioning is the initial positioning of the conveyor line, and the secondary positioning is the complete insertion of the positioning component into the positioning groove of the mold tray.

[0006] Furthermore, the drive assembly includes a positioning cylinder, a connecting rod, and a rotating shaft. The positioning cylinder is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the rotating shaft. The positioning element is fixed on the rotating shaft. The positioning cylinder drives the rotating shaft to rotate through the connecting rod, and the rotating shaft drives the positioning element to rotate, thereby causing the positioning element to be engaged in the positioning groove of the mold tray.

[0007] Furthermore, the positioning element is a positioning wheel, and the positioning groove is a semi-circular groove adapted to the positioning wheel.

[0008] Furthermore, a number of evenly distributed positioning components are connected to one of the rotating shafts, and the interval between the positioning components is equal to the interval between the mold trays on the conveyor line, so as to perform secondary positioning on several mold trays at the same time. Corresponding to multiple positioning operation stations, the products on multiple mold trays can be gripped at the same time to improve work efficiency.

[0009] Furthermore, there are three sets of positioning components, which simultaneously perform secondary positioning on the three mold trays.

[0010] Furthermore, the elastic mounting structure also includes return springs. Two sets of return springs are respectively sleeved at both ends of the guide rod and located between the slider and the mold tray, so that the slider is located in the middle position of the guide rod, thereby ensuring that the mold tray is kept within a certain positioning range. This avoids the mold tray deviating too far, making it difficult for the positioning component to enter the positioning groove, thus preventing secondary positioning failure.

[0011] Furthermore, the bottom of the mold tray is provided with a sliding groove, the two ends of the guide rod are fixed on the side wall of the sliding groove, the slider passes through the guide rod and is located in the sliding groove, the return spring passes through the guide rod, one end of which abuts against the side wall of the sliding groove, and the other end abuts against the end face of the slider, and the two sets of return springs are respectively located at the two ends of the slider.

[0012] Furthermore, the conveyor line is a synchronous belt conveyor line or a chain conveyor line.

[0013] This invention movably mounts a mold tray on a conveyor line. After the conveyor line moves the mold tray to the positioning station for initial positioning, the driving positioning component moves the mold tray within a certain range, causing the positioning component to fully engage in the positioning groove. The mold tray then stops at the set position, completing the secondary precise positioning of the mold tray. This process is rapid and can quickly position the mold tray in a very short time. The structure of the driving component allows one set of driving components to simultaneously drive multiple sets of positioning components, enabling secondary positioning of multiple sets of mold trays at the same time, thus improving work efficiency. The flexible installation structure and the driving component are simple in structure, easy to implement, convenient to operate, accurate in control, and widely applicable, meeting the positioning needs of mold trays with various conveyor lines and positioning methods. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure in the unpositioned state of another embodiment of the present invention.

[0016] Figure 3 This is a structural schematic diagram of the positioning state of another embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the bottom structure of the mold tray in an embodiment of this utility model.

[0018] Reference numerals: 1-Conveyor line; 2-Mold tray; 3-Elastic mounting structure; 4-Drive assembly; 5-Positioning component; 21-Positioning groove; 31-Sliding groove; 32-Guide rod; 33-Slider; 34-Return spring; 41-Positioning cylinder; 42-Connecting rod; 43-Rotating shaft. Detailed Implementation

[0019] A secondary positioning mechanism for a mold tray, such as Figures 1 to 4 The system includes a conveyor line 1, a mold tray 2, a flexible mounting structure 3, a drive assembly 4, and a positioning component 5. The mold tray 2 is used to place and position products, which are positioned and arranged in the mold tray 2 for the robot arm to grasp or perform other operations. The flexible mounting structure 3 includes a slider 33 and a guide rod 32. The guide rod 32 is fixed on the mold tray 2, and its extension direction is parallel to the conveying direction of the conveyor line 1. The slider 33 slides through the guide rod 32 and is also connected to the conveyor line 1. The mold tray 2 is mounted on the conveyor line 1 through the flexible mounting structure 3. Due to the sliding between the slider 33 and the guide rail, the mold tray 2 can move relative to the conveyor line 1 within a certain range, facilitating secondary precise positioning by the positioning component 5.

[0020] The conveyor line 1 is used to transport the mold tray 2 to the positioning operation station for initial positioning (primary positioning). The conveyor line 1 can be a synchronous belt conveyor line 1 or a chain conveyor line 1. Positioning slots 21 are provided on both sides of the mold tray 2 near the conveyor line 1. The positioning element 5 is located beside the positioning operation station and is positioned opposite the positioning slots 21. The drive assembly 4 is connected to the positioning element 5 to drive the positioning element 5 into the positioning slots 21 of the mold tray 2. Under the action of the positioning element 5, the mold tray 2 moves within a certain range, allowing the positioning element 5 to fully enter the positioning slots 21. When the positioning element 5 is fully entered into the positioning slots 21, the mold tray 2 achieves secondary precise positioning at the positioning operation station. Since the horizontal position of the positioning line remains unchanged, the accuracy of the secondary positioning of the mold tray 2 can be guaranteed.

[0021] In one embodiment, the drive assembly 4 includes a positioning cylinder 41, a connecting rod 42, and a rotating shaft 43. The positioning cylinder 41 is connected to one end of the connecting rod 42, and the other end of the connecting rod 42 is connected to the rotating shaft 43. The positioning element 5 is fixed on the rotating shaft 43. The positioning cylinder 41 drives the rotating shaft 43 to rotate via the connecting rod 42, and the rotating shaft 43 drives the positioning element 5 to rotate, thereby causing the positioning element 5 to engage in the positioning groove 21 of the mold tray 2. In this embodiment, the positioning element 5 is a positioning wheel, and the positioning groove 21 is a semi-circular groove adapted to the positioning wheel. In this way, even if there is a large positional deviation between the positioning wheel and the positioning groove 21, the positioning wheel can smoothly slide into the semi-circular groove, thereby achieving secondary mechanical positioning.

[0022] As one implementation method, such as Figure 1 A plurality of evenly distributed positioning elements 5 are connected to a rotating shaft 43, and the spacing between the positioning elements 5 is equal to the spacing between the mold trays 2 on the conveyor line 1, so as to simultaneously perform secondary positioning on a plurality of mold trays 2. Corresponding to multiple positioning operation stations, products on multiple mold trays 2 can be gripped simultaneously to improve work efficiency. In this embodiment, there are three sets of positioning elements 5, which simultaneously perform secondary positioning on three mold trays 2.

[0023] In this embodiment, as Figure 4 The elastic mounting structure 3 also includes return springs 34. Two sets of return springs 34 are respectively sleeved at both ends of the guide rod 32 and located between the slider 33 and the mold tray 2. This allows the slider 33 to be positioned in the middle of the guide rod 32, thus ensuring that the mold tray 2 remains within a certain positioning range. The return springs 34 ensure that the slider 33 is always in the middle position, preventing excessive deviation of the mold tray 2 and making it difficult for the positioning component 5 to enter the positioning groove 21, which could lead to secondary positioning failure.

[0024] Specifically, the bottom of the mold tray 2 is provided with a sliding groove 31, the two ends of the guide rod 32 are respectively fixed on the side wall of the sliding groove 31, the slider 33 passes through the guide rod 32 and is located in the sliding groove 31, the return spring 34 passes through the guide rod 32, one end of which abuts against the side wall of the sliding groove 31, and the other end abuts against the end face of the slider 33, and the two sets of return springs 34 are respectively located at the two ends of the slider 33.

[0025] The working process of this utility model is as follows: After the mold tray 2 is driven to the positioning operation station by the synchronous belt or chain for initial positioning, the positioning cylinder 41 extends and drives the rotating shaft 43 and the positioning component 5 (positioning wheel) on the rotating shaft 43 to rotate. The positioning wheel enters the positioning groove 21. During the process of the positioning wheel sliding into the positioning groove 21, the mold tray 2 self-adjusts under the action of the positioning wheel through the elastic mounting structure 3. The slider 33 slides along the guide rod 32, and the mold tray 2 moves in accordance with the positioning wheel. When the positioning wheel is completely slid into the positioning groove 21, the mold tray 2 is fixed at the set position, completing the secondary positioning. The robot can then accurately grasp or perform other operations on the product on the mold tray 2.

[0026] The above detailed description is a specific description of a feasible embodiment of the present utility model. This embodiment is not intended to limit the patent scope of the present utility model. All equivalent implementations or modifications that do not depart from the present utility model should be included in the patent scope of this case.

Claims

1. A secondary positioning mechanism for a mold tray, characterized in that, The system includes a conveyor line, a mold tray, a flexible mounting structure, a drive assembly, and a positioning component. The mold tray is used to place and position products. The flexible mounting structure includes a slider and a guide rod. The guide rod is fixed to the mold tray, and its extension direction is parallel to the conveying direction of the conveyor line. The slider slides through the guide rod and is simultaneously connected to the conveyor line. The mold tray is mounted on the conveyor line via the flexible mounting structure, and due to the sliding between the slider and the guide rod, the mold tray can move relative to the conveyor line within a certain range. The conveyor line is used to transport the mold tray to a positioning operation station for initial positioning. The mold tray has positioning grooves on both sides near the conveyor line. The positioning component is located beside the positioning operation station and is positioned opposite the positioning grooves. The drive assembly is connected to the positioning component to drive the positioning component into the positioning groove of the mold tray. The mold tray moves under the action of the positioning component, causing the positioning component to fully enter the positioning groove, thereby achieving secondary positioning of the mold tray at the positioning operation station.

2. The secondary positioning mechanism for a mold tray according to claim 1, characterized in that, The drive assembly includes a positioning cylinder, a connecting rod, and a rotating shaft. The positioning cylinder is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the rotating shaft. The positioning element is fixed on the rotating shaft. The positioning cylinder drives the rotating shaft to rotate through the connecting rod, and the rotating shaft drives the positioning element to rotate, thereby causing the positioning element to be engaged in the positioning groove of the mold tray.

3. The secondary positioning mechanism for a mold tray according to claim 2, characterized in that, The positioning element is a positioning wheel, and the positioning groove is a semi-circular groove adapted to the positioning wheel.

4. The secondary positioning mechanism for a mold tray according to claim 2, characterized in that, A number of evenly distributed positioning elements are connected to a rotating shaft, and the interval between the positioning elements is equal to the interval between the mold trays on the conveyor line, so as to perform secondary positioning on several mold trays simultaneously.

5. The secondary positioning mechanism for a mold tray according to claim 4, characterized in that, There are three sets of positioning components, which simultaneously perform secondary positioning on the three mold trays.

6. The secondary positioning mechanism for a mold tray according to claim 1, characterized in that, The elastic mounting structure also includes return springs. Two sets of return springs are respectively sleeved at both ends of the guide rod and located between the slider and the mold tray, so that the slider is located in the middle position of the guide rod, thereby ensuring that the mold tray is kept within a certain positioning range.

7. A secondary positioning mechanism for a mold tray according to claim 6, characterized in that, The bottom of the mold tray is provided with a sliding groove. The two ends of the guide rod are fixed on the side wall of the sliding groove. The slider passes through the guide rod and is located in the sliding groove. After the return spring passes through the guide rod, one end of it abuts against the side wall of the sliding groove, and the other end abuts against the end face of the slider. Two sets of return springs are located at the two ends of the slider respectively.

8. The secondary positioning mechanism for a mold tray according to claim 1, characterized in that, The conveyor line is a synchronous belt conveyor line or a chain conveyor line.

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